Hole in the Wall!

A large tank is filled with water (density ρ\rho). A small hole is made at a depth of h=10mh = 10m below the water surface. The range of water issuing out of the hole is RR on ground. What Extra Pressure (in atm) must be applied on the water surface so that the range becomes 2R2R?

Details and Assumptions:

\bullet The answer to this problem is an Integer
ρ=103kg/m3\bullet \rho = 10^3 kg/m^3
g=10m/s2\bullet g = 10 m/s^2
\bullet Water is assumed to be ideal liquid

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